ICF-2001を修理しました Repair a Sony junk radio.[ Sony ICF-2001 ]-(1980) / 5945kHz RNZ INT.
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- Опубликовано: 2 окт 2024
- 故障原因は、外部DC端子の接触不良と、回路パターン切れと断線、修理時の半田付け不良、ボリューム回路のコンデンサ不良等でした。このセットの回路部品は大きいのでメンテナンス性が良いです。回路図を見ると、電源の電池は4.5Vなのですが、DC-DCコンバータを使い14Vに昇圧しています。当時のマイコン、PLLチップを動作させるには高電圧が要るようです。おそらく13.8Ｖの電源にしたかったのでしょうが、それでは固定機になってしまいます。また回路構成は、DUALコンバージョンですが、IstIFが66MHz、2ndIFは10.7MHzを使っており、フィルターにはなんと2段のクリスタルフィルターを用いています。そして、ミキサーには、これでもかというほどFETも多用しています。イメージ妨害,はまず発生しないとても贅沢な設計です。このラジオは現在でも通用する画期的なプロダクトプランニング製品だと思います。
最初は修理できなかったら置物にしようと考えていました。ところが修理できたので結局ラジオがまた増えてしまいました。。
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TThe cause of the failure was a contact failure of the external DC terminal, circuit pattern breakage and disconnection, soldering failure at the time of repair, capacitor failure of the volume circuit, etc. The circuit components of this set are big, so they are easy to maintain. According to the circuit diagram, the battery of the power supply is 4.5 V, but it is boosted to 14 V by using a DC-DC converter. It seems that a high voltage is required to operate the microcomputer and PLL chip at that time. You probably wanted a 13.8 volt power supply, but that would be a stationary unit. The circuit configuration is DUAL conversion. IstIF uses 66 MHz, 2ndIF uses 10.7 MHz, and the filter uses a 2 stage crystal filter. We also use a lot of FETs. Image interference is a very luxurious design that rarely occurs. I think this radio is an epoch-making product planning that still works today.
At first, I was thinking of buying an ornament if I couldn't fix it.However, the number of radios has increased since it was repaired.Thank you for watching!
#VoΨoV_Repair
#5945kHz
#SW_NewZealand
Thank you Mr. Tengu and I did watch to the end😊. I have the same radio I bought for 30€ It worked a couple of years with no problem. Now the Volume will go low...with a Tap on top of radio the volume will return to normal. So could possibly be that capsitor in the volume circuit or a bad connection, maybe a solder failure. I will open it up and look. If it's only bad connection I can repair it. Even replacement of aCap is not a problem for me.. Mr. Tengu, thank you for sharing this repair video...you are a master 😆 Brian
Hello, dear Brian. Thank you for your comment. You did a very good shopping. But your radio doesn't seem to be working well. The volume of my radio was normal. However, a lot of carbon was attached. I cleaned the contacts of the volume. It's very easy because you can see the sliding surface. The cotton swab turned black. By the way, if you open the radio, please be careful. There is felt between the front panel and the back panel. This is to prevent vibration. This felt is hard and stuck. If you open it all at once, the inside will be disconnected like me. I wish you success.73s Tengu.
This is a link to the [ICF-2001] Service Manual ↓
www.radiomanual.info/schemi/RX/Sony_ICF-2001_serv.pdf
Great job Tengu! And congrats for the new nice Sony! Thanks for the repair video and I got no problem to look until the end ;-) 73s Ralf
Good morning (In Japan,), dear Ralf. Thank you for watching until the end. At first, I thought it was difficult to repair, but the semiconductor was not broken at all, so I am happy that it was easy to repair.73s Tengu :-)
Friend, I have a radio like this Sony ICF 6500W and it started to stop working and the frequency in the VFO varies a lot. . Have you ever had or know someone who has had this problem with this Sony ICF-6500W radio or do you have any tips or know how to fix it. I thank everyone
Hello. Thanks for the message. If this is the case, it may be due to a poor contact in the frequency band selection switch. It might be a good idea to remove the rust from the contacts by flipping many switches. If that doesn't work, you'll have to replace the local oscillation transistor. Sorry for the late reply.73s
Hello Mr Tengu very nice video thank you I have ICF 2001D I need Orjinal antenna screw frım japan can you help me to find it ? Many thnaks
Hello. Thanks for the message. You might be able to find a similar antenna on Ali-express.
Hi do you have the external antenna willing to buy it
Hello. Thanks for the message. It's good to do it that way.73s
¡Buen trabajo Tengu! Me gusta mucho el plano final con la maravillosa música de RNZI de fondo, me recuerda a las viejas películas de serie B, solo te ha faltado hacer el vídeo en banco y negro. Saludos cordiales.
Hello, Mr. Onda. After I uploaded the video of Darth Vader, I repaired the radio. Shooting and editing the video took about five times longer than repairing the radio. Good BGM happened to come from New Zealand. It's the power of Darth Vader. Thanks for watching.73s Tengu
@@Ken.s_BCL-LogVideo May the Force be with you!
I have this radio in the original box and in brand new condition with frequency booklet. I bought it new and on sale for $98.00 in Aschaffenburg, Germany in 1983. I break it out and do some channel surfing every few years and then back in the box.
Hello, Mr. dapper. Thank you for watching. You also have skills. Great. I bought this radio for 25 dollars including shipping. I gave up repairing it at first. But I learned what I could do if I tried.73s Tengu(^^)v
@@Ken.s_BCL-LogVideo You are extremely talented at repairing electronics for sure! I also have had an interest in this type of hobby but went the way of wood working as time passed on.. Keep up with the good work and awesome, interesting videos!
いいなぁ～自分のICF-2001とICF-PRO70も治してほしいなぁ
Any radio will give trouble every now and then. It's patience that we need to repair it, and at times a bit of cursing, but in the end when it comes alive, you come alive too. We start to enjoy life once more.
Hello. Yes, as you said, repairing and continuing to use it is a new kind of fun. Thanks for the message.
俺のICF2001も直して欲しいな・・・・・
Dc cord adapter nya memakai yang berapa volt tuan?
This video uses alkaline batteries. Thanks for watching.73s
Why do you say junk? Isnt this high end radio?
hello. Yes, as you say, it's Sony's masterpiece radio. However, it was sold as a junk on the auction site. thank you for the message.73s!